/robowaifu/ - DIY Robot Wives

Advancing robotics to a point where anime catgrill meidos in tiny miniskirts are a reality.

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Welcome to /robowaifu/, the exotic AI tavern where intrepid adventurers gather to swap loot & old war stories...

F = ma Robowaifu Technician 12/13/2020 (Sun) 04:24:19 No.7777
Alright mathematicians/physicians report in. Us Plebeians need your honest help to create robowaifus in beginner's terms. How do we make our robowaifus properly dance with us at the Royal Ball? >tl;dr Surely in the end it will be the laws of physic and not mere hyperbole that brings us all real robowaifus in the end. Moar maths kthx.
>>7777 Not a mathematician (electronics engineer), but would certainly like a ballroom dancing bot. Used to do ballroom dancing at uni and must say, having a perfect follower be the best. To dance Viennese waltz with my robo-waifu.... <3 The best thing is probably to start with a simple self-balancing robot, look at some existing projects, analyse the inverse pendulum problem.
>>7777 >>7786 Same anon. Did a quick search and saw this interesting article: https://ctms.engin.umich.edu/CTMS/index.php?example=InvertedPendulum&section=SystemModeling For control systems you need calculus, linear algebra, complex numbers knowledge. By analysing your problem (in the article's case, a kart with an inverse pnedulum), you can find if the system is stable. Unstable systems will experience a large change in position, speed etc. with a small input (imagine nudging an upright domino for example).
>>7786 >analyse the inverse pendulum problem. This. Specifically, we need a both forward- and inverse-kinematics solver system that will work on the multi-jointed bipedal complex of hips/knees/ankles/feet. This solver should at the least be able to address a steady-state mass affixed directly centered above the pelvis (the so called center of gravity in a typical humanoid) and allow for walking. This central mass is the 'inverse pendulum' and the solver must address successfully the complex just mentioned.
>>7786 >Ballroom dancing robot Does it have to have legs or can it just roll about on wheels? Because I reckon a robot skidding about the ballroom will be much easier. Just call it a new style! (P.S. can ya tell I know nothing about ballroom dancing? :D)
>>7786 >but would certainly like a ballroom dancing bot. Seconded. What if /robowaifu/ were to focus explicitly and specifically on solving that single problem alone Anon? Wouldn't we in many practical ways be advancing the much bigger set of general motion solutions for robowaifus across the entire spectrum? Surely ballroom dancing represents a domain that really pushes the envelope of sophisticated, discriminating humanoid bodily motion, yet without going to real extremes like robowaifu gymnasts or qt3.14 robowaifu enforcers. Seems like a relatively balanced goal for us that is a real achievement in itself, but not too unreachable conceptually overall.
related xpost, I think. >>7825
>>7802 >...about on wheels? Because I reckon a robot skidding... That could be a good solution to start with. One of the requirements for dancing Viennese Waltz without getting too tired, is to maintain close contact and move past each other instead of trying to rotate. The cool thing is that the motion looks like continuous spinning when really you're stepping forward through your partner and doing a 180 degree turn and then repeat the action this time moving backwards. Do this cleanly enough and fast enough (6/8 timing music is FAST xD), then it will look like quite beautiful, the couple moving around on the floor. In practice, I rarely had a gal that I clicked well enough well enough with (and who cared as much about the dance as I did) to actually make Viennese waltz work. Basic form of this dance has the simplest steps, but one of the most difficult techniques. So mechanical legs are still probably necessary for such a fit (though may be wheels could be used where the feet would be?) >can ya tell I know nothing about ballroom dancing? :D I'll be honest, quite a niche hobby indeed XD >>7811 I like you thinking. I'm in a similar boat in that, I want a robo-waifu to entertain me (by communication and dancing). Other features are not necessary to me. So as you point out, developments should happen in parallel and in different areas. Perhaps much further down the line functionality could be combined (though I would not sacrifice ballroom abilihy for much else :P) Perhaps if we agreed on a common "personality core", which could be attached to different robo-waifu models, depending on the required task. Still get to have *your* waifu, just the outer hardware changes. >>7830 Thanks, I'll give it a read later.
I'm using the videos of StatQuest (Josh Starmer) to learn about statistics and more: https://youtube.com/c/joshstarmer Here the basics: https://youtube.com/playlist?list=PLblh5JKOoLUK0FLuzwntyYI10UQFUhsY9
>>9065 I also want to recommend "Nudge Algebra" app for repeating some basic math skills, to prevent forgetting them, or for relearning if that already happened.

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